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Terrestrial isopods of the family Eubelidae Budde-Lund, 1899 from Iran, with description of a new species (Isopoda, Oniscidea).

ABSTRACT: In the present work, terrestrial isopods of the family Eubelidae are investigated in Iran. The genera Periscyphis and Somalodillo are reported for the first time. More localities are presented for Koweitoniscustamei (Omer-Cooper, 1923) while K.shafieii Kashani, sp. n. is described and figured. A map indicating the sampling localities for the species is presented.

SUBMITTER: Kashani GM

PROVIDER: S-EPMC6288252 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Terrestrial isopods of the family Eubelidae Budde-Lund, 1899 from Iran, with description of a new species (Isopoda, Oniscidea).

Kashani Ghasem M GM Abedini Ahdiyeh A Montesanto Giuseppe G

ZooKeys 20181203 801

In the present work, terrestrial isopods of the family Eubelidae are investigated in Iran. The genera Periscyphis and Somalodillo are reported for the first time. More localities are presented for Koweitoniscustamei (Omer-Cooper, 1923) while K.shafieii Kashani, sp. n. is described and figured. A map indicating the sampling localities for the species is presented. ...[more]

PMID: 30564035

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Project description:The marsupium, a brood pouch in peracarid crustaceans (Crustacea, Malacostraca) has evolved in terrestrial environment for providing nutrition and optimal conditions for embryogenesis. In the present study we give details on the histology and ultrastructure of its constituting elements such as oostegites and cotyledons. Marsupia of two different eco-morphological types of woodlice, namely the non-conglobating species Trachelipusrathkii Brandt, 1833 and the conglobating species Cylisticusconvexus De Geer, 1778 were investigated. Light microscopic (LM) studies showed some differences in the main structure of the two species' brood pouch: in Trachelipusrathkii, a 'clinger' type woodlice, the oostegites bend outwards during brood incubation as growing offspring require more space, while in Cylisticusconvexus, a 'roller' type isopod, the sternites arch into the body cavity to ensure space for developing offspring and still allowing conglobation of the gravid females. The quantitative analysis of the oostegites' cuticle proved that the outer part is about 2.5 - 3 times thicker compared to the inner part in both species. Electron microscopic (TEM) examinations show only small histological differences in the oostegites and cotyledon structure of the two species. Cellular elements and moderately electron dense fleecy precipitate are found in the hemolymph space between the two cuticles of oostegites. The cells contain PAS positive polysaccharide areas. TEM studies revealed some differences in the cotyledon ultrastructure of the two species. Cotyledons of Trachelipusrathkii consist of cells with cristate mitochondria and granular endoplasmic reticulum with cisterns. Cotyledons of Cylisticusconvexus consist of cells with densely cristate mitochondria and ribosomes attached to vesicular membrane structures. In both species cells with electron dense bodies were observed. We conclude that - besides the differences in marsupial shapes - the fine structure of the oostegites and cotyledons is hardly affected by the eco-morphological type, specifically the conglobating or non-conglobating character of the studied species.

Dataset Information

Terrestrial isopods of the family Eubelidae Budde-Lund, 1899 from Iran, with description of a new species (Isopoda, Oniscidea).

Publications

Terrestrial isopods of the family Eubelidae Budde-Lund, 1899 from Iran, with description of a new species (Isopoda, Oniscidea).

Similar Datasets

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